Malicious PDF — malware analysis report

Static analysis result for SHA-256 982bf6506b8674a8…

MALICIOUS

PDF

53.3 KB Created: 2020-08-14 10:43:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df37358147fb17077037ad967b853f98 SHA-1: 33988c0ea8be3e20e6cd38a187250ef6569816b6 SHA-256: 982bf6506b8674a83d85ddf5fd9f398c5ab5335a70514374e13c615c962d6209
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded URL 'https://ttraff.cc/pify?keyword=degradacion+ambiental+definicion+pdf' is a clear indicator of malicious intent, likely to lure users to malicious sites. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=degradacion+ambiental+definicion+pdf
    • http://files.ironmountainarts.org/uploads/1/3/0/9/130969034/mopaf.pdf
    • http://files.silkwoodart.com/uploads/1/3/0/9/130969241/8956538.pdf
    • http://files.edasa.org/uploads/1/3/0/8/130814666/9762a98f5221629.pdf
    • http://zotov.thesummittgroupllc.com/uploads/1/3/1/4/131408899/kigupe_mojamijoka.pdf
    • http://files.moonstruckbernedoodles.ca/uploads/1/3/2/6/132682039/wunesunelo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3759/6580/files/opsc_aso_new_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0154/files/55585406617.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/nelipijetajejexuguvafek.pdf
    • https://cdn.shopify.com/s/files/1/0430/7373/2769/files/dijorovuwugasimanetotap.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4383/files/adobe_reader_2020_full_version_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/guwesimutetalajizobanubel.pdf
    • https://cdn.shopify.com/s/files/1/0447/0459/6122/files/dissection_aortique_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7682/files/articles_worksheets_for_grade_5.pdf
    • https://cdn.shopify.com/s/files/1/0432/0008/6175/files/80149613079.pdf
    • https://cdn.shopify.com/s/files/1/0429/1962/4870/files/vezan.pdf
    • https://cdn.shopify.com/s/files/1/0431/6296/0023/files/vejidodofekukok.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008e9f.bin
8e36d5265f80eac83f8beb01c95a220d26664185098acc3336e33eaf5574a4f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E9F 5436 bytes
font_01_sfnt_off0000a108.bin
5f26362ed56e3dda33fb1e386378013f6c12bc3b98aa279e37cdf6e75d7b0f07		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA108 11400 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.